<?php  if ( ! defined('BASEPATH')) exit('No direct script access allowed');
class MY_Pagination extends CI_Pagination {
	var $ci;
	var $base_url     		= ''; // The page we are linking to
	var $total_rows     	= ''; // Total number of items (database results)
	var $per_page       	= 10; // Max number of items you want shown per page
	var $num_links      	=  2; // Number of "digit" links to show before/after the currently viewed page
	var $cur_page       	=  1; // The current page being viewed
	var $first_link     	= '&lsaquo; First';
	var $next_link     		= '>';
	var $prev_link      	= '<';
	var $last_link      	= 'Last &rsaquo;';
	var $uri_segment    	= 3;
	var $full_tag_open  	= '';
	var $full_tag_close 	= '';
	var $first_tag_open 	= '';
	var $first_tag_close	= '&nbsp;';
	var $last_tag_open  	= '&nbsp;';
	var $last_tag_close 	= '';
	var $cur_tag_open   	= '&nbsp;<b>';
	var $cur_tag_close  	= '</b>';
	var $next_tag_open  	= '&nbsp;';
	var $next_tag_close 	= '&nbsp;';
	var $prev_tag_open  	= '&nbsp;';
	var $prev_tag_close 	= '';
	var $num_tag_open   	= '&nbsp;';
	var $num_tag_close  	= '';
	
	var $add_last_slash 	= TRUE;
	var $use_url_suffix		= FALSE;
	var	$url_suffix			= '';

	/**
	 * Constructor
	 *
	 * @access    public
	 * @param    array    initialization parameters
	 */
	function __construct($params = array())
	{
		if (count($params) > 0)
		{
			$this->initialize($params);
		}
		
		log_message('debug', "Pagination Class Initialized");
	}

	// --------------------------------------------------------------------

	/**
	 * Initialize Preferences
	 *
	 * @access    public
	 * @param    array    initialization parameters
	 * @return    void
	 */
	function initialize($params = array())
	{
		$this->ci =& get_instance();
		if (count($params) > 0)
		{
			foreach ($params as $key => $val)
			{
				if (isset($this->$key))
				{
					$this->$key = $val;
				}
			}
		}
		
		if($this->use_url_suffix)
		{
			$this->url_suffix = $this->ci->config->item('url_suffix');
		}
	}

	// --------------------------------------------------------------------

	/**
	 * Generate the pagination links
	 *
	 * @access    public
	 * @return    string
	 */
	function create_links()
	{
		// If our item count or per-page total is zero there is no need to continue.
		if ($this->total_rows == 0 OR $this->per_page == 0)
		{
			return '';
		}

		// Calculate the total number of pages
		$num_pages = ceil($this->total_rows / $this->per_page);

		// Is there only one page? Hm... nothing more to do here then.
		if ($num_pages == 1)
		{
			return '';
		}

		// Determine the current page number.
		$CI =& get_instance();
		if ($CI->uri->segment($this->uri_segment) != 0)
		{
			$this->cur_page = $CI->uri->segment($this->uri_segment);

			// Prep the current page - no funny business!
			$this->cur_page = (int) $this->cur_page;
		}

		$this->num_links = (int)$this->num_links;

		if ($this->num_links < 1)
		{
			show_error('Your number of links must be a positive number.');
		}

		if ( ! is_numeric($this->cur_page))
		{
			$this->cur_page = 0;
		}

		$uri_page_number = $this->cur_page;
		//$this->cur_page = floor(($this->cur_page/$this->per_page) + 1);
		$this->cur_page = floor($this->cur_page);

		// Calculate the start and end numbers. These determine
		// which number to start and end the digit links with
		$start = (($this->cur_page - $this->num_links) > 0) ? $this->cur_page - ($this->num_links - 1) : 1;
		$end   = (($this->cur_page + $this->num_links) < $num_pages) ? $this->cur_page + $this->num_links : $num_pages;

		// Add a trailing slash to the base URL if needed
		if($this->add_last_slash)
		{
			$this->base_url = rtrim($this->base_url, '/') .'/';
		}
		else
		{
			$this->base_url = rtrim($this->base_url, '/');
		}

		// And here we go...
		$output = '';

		// Render the "First" link
		if  ($this->cur_page > $this->num_links)
		{
			$output .= $this->first_tag_open.'<a href="'.$this->base_url. '1' .$this->url_suffix.'">'.$this->first_link.'</a>'.$this->first_tag_close;
		}

		// Render the "previous" link
		if  ($this->cur_page != 1)
		{
			$i = $this->cur_page - 1;
			if ($i == 0) $i = '';
			$output .= $this->prev_tag_open.'<a href="'.$this->base_url.$i.$this->url_suffix.'">'.$this->prev_link.'</a>'.$this->prev_tag_close;
		}

		// Write the digit links
		for ($loop = $start -1; $loop <= $end; $loop++)
		{
			$i = $loop;

			if ($i > 0)
			{
				if ($this->cur_page == $loop)
				{
					$output .= $this->cur_tag_open.$loop.$this->cur_tag_close; // Current page
				}
				else
				{
					$n = $i;
					$output .= $this->num_tag_open.'<a href="'.$this->base_url.$n.$this->url_suffix.'">'.$loop.'</a>'.$this->num_tag_close;
				}
			}
		}

		// Render the "next" link
		if ($this->cur_page < $num_pages)
		{
			$output .= $this->next_tag_open.'<a href="'.$this->base_url.($this->cur_page + 1).$this->url_suffix.'">'.$this->next_link.'</a>'.$this->next_tag_close;
		}

		// Render the "Last" link
		if (($this->cur_page + $this->num_links) < $num_pages)
		{
			$i = $num_pages;
			$output .= $this->last_tag_open.'<a href="'.$this->base_url.$i.$this->url_suffix.'">'.$this->last_link.'</a>'.$this->last_tag_close;
		}

		// Kill double slashes.  Note: Sometimes we can end up with a double slash
		// in the penultimate link so we'll kill all double slashes.
		$output = preg_replace("#([^:])//+#", "\\1/", $output);

		// Add the wrapper HTML if exists
		$output = $this->full_tag_open.$output.$this->full_tag_close;

		return $output;
	}
}